def build_profile (first,last,**user_info):
    """创建一个字典，包含我们知道用户的一切"""
    profile={}
    profile['first_name']=first
    profile['last_name']=last
    for key,value in user_info.items():
        profile[key]=value
    return profile
user_profile=build_profile('albert','einstein',location='princeton',field='physics')
print(user_profile)
